Table 1. Participant feedback regarding the effectiveness of the Complementary Health Approaches for Pain Survey (CHAPS) in a subgroup of patients seeking conventional care for pain management using questions to assess negative feedback regarding attractiveness, comprehension, acceptability, self-involvement, and persuasion of measurement items (N = 22).

Questions asked by interviewers	Negative feedback
Description of chronic pain too long?1, 2, 3, 4, 5	<5%
Provided examples for Complementary Health Approaches understandable and easy to answer? 1, 2, 3, 4, 5	<5%
Clarity of efficacy question in the Complementary Health Approaches table1, 2, 4, 5	50%; necessitated simple format change (shown in S1 Appendix)
Feedback elicited for open-ended herbal question1, 2, 3, 4, 5	<10%
Does “Other” option for Gender question require explanation?1, 2, 3	22%; we determined no changes to Gender item were necessary
Weighting on boxes for demographic questions1	No consistent preference for light vs. dark weighting
Marital status options understandable?1, 2, 3, 4, 5	10%; synonyms suggested
Additional options (i.e., ‘Caregiver’) included in Work status question?1, 2, 3, 4, 5	Nearly 60% indicated ‘Caregiver’ could be added; we determined no item changes necessary since other feedback indicated ‘Homemaker’ definition overlaps with ‘Caregiver’
Language or format of exercise question confusing? 1, 2, 4, 5	<10%

¹Overall attractiveness (visual appeal) assessed

²Comprehension assessed (Prompts included: “Do you understand what the question is asking? Are you retaining the idea of the question?”)

³Acceptability assessed (Prompts included: “Is question offensive or are there cultural/other barriers to answering question in this setting?”)

⁴Self-involvement assessed (Prompts included: “Would it be relatively easy to answer when thinking about your own lifestyle?”)

⁵Overall persuasion assessed (Prompts included: “Are questions relative to your concerns or conditions? Are items logically sequenced?”)